Netscape problems

I have been having problems with Netscape recently. Or what I think is a Netscape problem. When I connect to the internet I will get 100% cpu usage on the task manager for about one minute and then it will stop for about one minute. Then 100% cpu usage for a minute and back to normal or low usage for a minute. This will happen as long as I try to connect through Netscape. I have tried IE 6.0 and it doesn't seem to happen. So I assume it is a Netscape problem. I went to www.ufaq.org, which is a Unofficial Netscape support site and the reply was that they are working on it. Is Netscape that vulnerable,loaded with problems, or just dumped on the unsuspecting public to debug it after the fact. If the problem is indeed Netscape what browser would be considered the most reliable, debugged, trouble free? I realize nothing is bullit proof, but there must be a browser that is somewhat hacker resistant. Any Ideas?confused